How do laser levels work?

Question

How is the laser able to move around corners, or able to draw a vertical line?

Is there one laser diode for each red line, and is the diode then being made to sweep the beam along the wall? Are all the diodes then coordinated thus producing those lines and points? Is the sweep at a particular frequency? How is the diode moved? Mechanical or electronic sweep?

Kind of like what a CRT horizontal/vertical deflection ckt does to the electron gun?

I'm voting to close this question as off-topic because it isn't about EE. — Andy aka, Apr 12 '16 at 10:05
Line lenses: http://www.thorlabs.de/newgrouppage9.cfm?objectgroup_id=9394 — pjc50, Apr 12 '16 at 12:51

score 3 · Accepted Answer · answered Apr 12 '16 at 10:07

3

It's usually either a lens or a mechanical sweep with a fixed laser and rotating mirror.

answered Apr 12 '16 at 10:07

alex.forencich

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How do laser levels work?

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